var redis = require("redis");
// 使用createClient方式来连接服务器
var client = redis.createClient(6379, '127.0.0.1');// 注册事件，注意 ready 事件在 connect 事件前面
client.on("error", function(error){console.log("Error " + error);console.log("redis error");
});client.on("ready", function(err){if(err){console.log("Error " + error);}else{console.log("redis ready");}
})client.on("connect", function(err){if(err){console.log("Error " + error);}else{console.log("redis connect");}
})client.on("reconnecting", function(err){if(err){console.log("Error " + error);}else{console.log("redis reconnecting");}
})client.on("end", function(err){if(err){console.log("Error " + error);}else{console.log("redis end");}
})client.on("warning", function(err){if(err){console.log("Error " + error);}else{console.log("redis warning");}
})

// 使用set进行string类型数据的设置
client.set("color", "red", redis.print);// 使用get进行string类型数据的读取
client.get("color", function(err, value){if(err) throw err;console.log("Got: " + value);
})

// 使用hmset进行hash数据类型的设置
client.hmset("camping", {shelter: '2-person tent',cooking: 'campstove'
}, redis.print);// 使用hget读取hash数据类型的某个指定key的值
client.hget("camping", 'cooking', function(err, value){if(err){throw err;}console.log("will be cooking with " + value);
})// 使用hkeys进行hash数据类型的keys获取
client.hkeys('camping', function(err, keys){if(err) throw err;keys.forEach(function(key, i){console.log("  " + key);});
});

client.lpush("tasks", "Paint the bikeshed red.", redis.print);
client.lpush("tasks", "Paint the bikeshed green.", redis.print);
client.lpush("tasks", "Paint the bikeshed blue.", redis.print);
client.lrange("tasks", 0, -1, function(err, items){if(err){throw err;        }else{items.forEach(function(item, i){console.log("  "+item);});}
});

client.sadd("ip_address_set", '204.10.37.96', redis.print);
client.sadd("ip_address_set", '204.10.37.96', redis.print);
client.sadd("ip_address_set", '204.75.37.152', redis.print);
client.smembers("ip_address_set", function(err, members){if(err) throw err;console.log(members);
});